The report references physical evidence at the scene and a witness account.

Per the report, Nisbet was southbound in a Toyota Camry near milepost 29, when the Toyota crossed the centerline into the northbound lane. Once in the northbound lane, the Toyota collided with a northbound tractor-trailer combination.

After the vehicles collided, the Toyota spun about 270 degrees and came to rest on the southbound shoulder of the highway.